Solve for y
y=\frac{\left(x+2\right)^{2}}{4}
Solve for x (complex solution)
x=-2\sqrt{y}-2
x=2\sqrt{y}-2
Solve for x
x=-2\sqrt{y}-2
x=2\sqrt{y}-2\text{, }y\geq 0
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y=\frac{1}{4}\left(x^{2}+4x+4\right)
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(x+2\right)^{2}.
y=\frac{1}{4}x^{2}+x+1
Use the distributive property to multiply \frac{1}{4} by x^{2}+4x+4.
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